#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=2

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
deskey=$(ynh_app_setting_get --app=$app --key=deskey)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=30

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# If path_url doesn't exist, create it
if [ -z "$path_url" ]; then
	path_url=$(ynh_app_setting_get --app=$app --key=path_url)
	ynh_app_setting_set --app=$app --key=path --value=$path_url
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=6

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path"

	# Clear cache
	ynh_secure_remove --file="$final_path/var/cache"
	mkdir "$final_path/var/cache"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..."

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=7

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..."

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION

# Set-up fail2ban
# Create the log file is not already existing
if [ ! -f "$final_path/var/logs/prod.log" ]
then
  mkdir -p "$final_path/var/logs/"
  touch "$final_path/var/logs/prod.log"
  chown $app: "$final_path/var/logs/prod.log"
fi
# Add fail2ban config
ynh_add_fail2ban_config --logpath="$final_path/var/logs/prod.log" --failregex='app.ERROR: Authentication failure for user "([\w]+)?", from IP "<HOST>"' --max_retry=5 # same as install config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# CONFIGURE WALLABAG
#=================================================

wb_conf=$final_path/app/config/parameters.yml

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Reconfiguring wallabag..." --weight=11

	# Copy and set Wallabag dist configuration
	cp $final_path/app/config/parameters.yml.dist $wb_conf

	ynh_replace_string --match_string="fosuser_registration: true" --replace_string="fosuser_registration: false" --target_file=$wb_conf
	ynh_replace_string --match_string="database_name: wallabag" --replace_string="database_name:  $db_name" --target_file=$wb_conf
	ynh_replace_string --match_string="database_user: root" --replace_string="database_user: $db_user" --target_file=$wb_conf
	ynh_replace_string --match_string="database_password: ~" --replace_string="database_password: $db_pwd" --target_file=$wb_conf
	ynh_replace_string --match_string="database_table_prefix: wallabag_" --replace_string="database_table_prefix: null" --target_file=$wb_conf
	ynh_replace_string --match_string="secret: ovmpmAWXRCabNlMgzlzFXDYmCFfzGv" --replace_string="secret: $deskey" --target_file=$wb_conf
	ynh_replace_string --match_string="domain_name: https://your-wallabag-url-instance.com" --replace_string="domain_name: https://$domain$path_url" --target_file=$wb_conf

	#=================================================
	# UPGRADE WALLABAG
	#=================================================

	# Alias for php-cli execution command
	php_exec="ynh_exec_as $app php${YNH_PHP_VERSION} "$final_path/bin/console" --no-interaction --env=prod"

	# Set permissions to app files
	chown -R $app: $final_path

	# Upgrade database and clear the cache
	$php_exec doctrine:migrations:migrate
	$php_exec cache:clear

	# Configure Wallabag instance URL
	ynh_mysql_connect_as --user=$db_user --password="$db_pwd" --database=$db_name <<< "UPDATE internal_setting SET value = 'https://$domain$path_url' WHERE name = 'wallabag_url'"
fi

#=================================================
# SETUP HOOKS
#=================================================

ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="../hooks/post_user_create"
ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="../hooks/post_user_delete"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================

ynh_use_logrotate --non-append

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

set_permissions

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Upgrade of $app completed" --last
